BACKGROUND Understanding children's physical activity motivation, its antecedents and associations with behavior is important and can be advanced by using self-determination theory. However, research among youth is largely restricted to adolescents and studies of motivation within certain contexts (e.g., physical education). There are no measures of self-determination theory constructs (physica...

The relationships between family environment and psychological distress and between psychological distress and sleep disturbance in adolescents are well established. However, less is known about the influence of family environment on sleep disturbance. The authors' goal is to examine the effects of parental involvement on psychological distress and sleep disturbance in 34 adolescents with a his...

The purpose of this study was to test variables consistently identified in the adult HIV literature as predictors of adherence (self-efficacy, social support, and psychological distress) in a sample of 24 HIV-positive youth (ages 16-24). Self-efficacy and psychological distress were significantly correlated with adherence but social support was not. Social support specific to taking medications...

BACKGROUND The hypothalamic-pituitary-adrenocortical (HPA) axis and sympathetic adrenomedullary (SAM) system are the major stress-response pathways. Plasma adrenocorticotropic hormone (ACTH) represents HPA axis activity, while plasma catecholamines are used as markers of the SAM system. Salivary alpha amylase (AA), chromogranin A (CgA), and immunoglobulin A (IgA) are candidate markers of stress...

Objective: Acceptance and Commitment Therapy (ACT) tries to increase the psychological acceptance of individuals during mental experiences (thoughts, emotions, etc.) and to decrease their ineffective control of behaviors. This study aimed to determine the impact of ACT on the psychological flexibility of students with thalassemia in Zahedan City, Iran.  Methods: The present study was a quasi-e...